Solve Over 40 Difficult BECE 2024 Integrated Science Questions, Plus Detailed Answers & BECE Areas
Worry no more over BECE preparations, resources provided by us are more than adequate to get you score the best of grades in the upcoming examination. These questions below are over 40 complex BECE 2024 Integrated Science questions. We have also included detailed explanations to each of the question provided.
Areas covered in these difficult BECE 2024 Integrated Science questions are;
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The respiratory system,
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Landforms,
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Life cycles of insects,
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Acids and bases,
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The circulatory system,
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The solar system,
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Atoms and the periodic table,
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The hydrological cycle,
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Farming systems, and cultural practices.
All these topics are relevant as far as the upcoming BECE questions in science are concern and are aligned with the GES new common core programme.
Note that these questions are level headed ones and demand a bit of reasoning come by your answers. We always advised students not to jump to look at the answers to the questions but solve the questions first, and later compare with our suggested responses.
BECE 2024 Questions on Respiratory System
- What is the primary function of the respiratory system?
- Name the main organs of the human respiratory system.
- Explain the process of inhalation and exhalation.
- How are oxygen and carbon dioxide exchanged in the lungs?
- What role do the diaphragm and intercostal muscles play in breathing?
Questions on Land Forms for BECE 2024
- Define what a mountain is and give an example.
- Differentiate between a valley and a plateau.
- Explain how rivers contribute to the formation of landforms.
- What are the characteristics of a coastal plain?
- Describe how erosion and weathering shape landforms.
2024 BECE Integrated Science Questions on Life Cycle of Mosquito and Grasshopper
Download and Solve 2024 JHS3 Mathematics Mock 2 Sample Questions and Answers
- Outline the stages in the life cycle of a mosquito.
- Describe the process of metamorphosis in a grasshopper.
- How do mosquitoes and grasshoppers reproduce?
- What is the significance of the life cycle in the survival of these insects?
- Explain how environmental factors influence the life cycle of mosquitoes and grasshoppers.
Questions on Acid, Base, and Salt
- Define what an acid is and give examples.
- How do acids differ from bases?
- Describe the properties of acids and bases.
- Explain the pH scale and its significance.
- What are neutralization reactions?
Circulatory System BECE Questions
- What is the circulatory system, and why is it essential?
- Name the components of the human circulatory system.
- Describe the functions of the heart.
- How does blood circulate through the body?
- What role do arteries, veins, and capillaries play in circulation?
Solar System Questions for BECE 2024
- Identify the planets in the solar system.
- What is the difference between a planet and a star?
- Describe the orbit of the Earth around the Sun.
- Explain why we experience seasons on Earth.
- What are comets and asteroids?
Atoms and the Periodic Table for BECE 2024 Integrated Science
- What is an atom, and what are its basic components?
- Describe the structure of an atom.
- Explain the significance of the periodic table.
- How are elements arranged in the periodic table?
- Give examples of elements and their symbols.
Hydrological Cycle BECE Questions
- Define the hydrological cycle.
- Describe the processes involved in the hydrological cycle.
- Explain the role of evaporation and condensation in the hydrological cycle.
- How does precipitation occur?
- What factors influence the hydrological cycle?
Farming System and Cultural Practices
- Define farming system and cultural practices.
- Name different types of farming systems.
- Describe traditional and modern farming methods.
- Explain the importance of cultural practices in farming.
- How do cultural practices impact crop yields and quality?
ANSWERS TO THE DIFFICULT 2024 BECE INTEGRATED SCIENCE QUESTIONS
These detailed and level headed answers cover a wide range of topics within the integrated science syllabus. With these answers, students are able to understand key concepts related to the respiratory system, landforms, life cycles of mosquito and grasshopper, acids and bases, the circulatory system, the solar system, atoms and the periodic table, the hydrological cycle, farming systems, and cultural practices.
Respiratory System
- What is the primary function of the respiratory system?
– The primary function of the respiratory system is to facilitate the exchange of gases, specifically oxygen and carbon dioxide, between the body and the environment.
- Name the main organs of the human respiratory system.
– The main organs of the human respiratory system include the nose, trachea (windpipe), lungs, bronchi, bronchioles, and alveoli.
- Explain the process of inhalation and exhalation.
– Inhalation: During inhalation, the diaphragm contracts and moves downward while the intercostal muscles contract, expanding the chest cavity. This expansion decreases the pressure inside the lungs, causing air to rush in from the environment.
– Exhalation: During exhalation, the diaphragm and intercostal muscles relax, allowing the chest cavity to decrease in size. This increases the pressure inside the lungs, causing air to be pushed out of the body.
- How are oxygen and carbon dioxide exchanged in the lungs?
– Oxygen and carbon dioxide are exchanged in the lungs through diffusion. Oxygen from the air inhaled into the lungs diffuses across the walls of the alveoli (tiny air sacs) into the bloodstream, where it binds to hemoglobin in red blood cells. At the same time, carbon dioxide diffuses from the bloodstream into the alveoli to be exhaled.
- What role do the diaphragm and intercostal muscles play in breathing?
– The diaphragm and intercostal muscles play essential roles in breathing. The diaphragm contracts and flattens during inhalation, increasing the volume of the chest cavity and causing air to enter the lungs. The intercostal muscles, located between the ribs, contract to lift the ribcage and further expand the chest cavity, aiding in inhalation. During exhalation, these muscles relax to allow the chest cavity to decrease in size, facilitating the expulsion of air from the lungs.
Answers to Land Forms Questions
- Define what a mountain is and give an example.
– A mountain is a landform that rises prominently above its surroundings, typically exhibiting steep slopes and considerable elevation. An example of a mountain is Mount Everest, located in the Himalayas.
- Differentiate between a valley and a plateau.
– A valley is a low-lying area of land between hills or mountains, often formed by the erosion of water or glaciers. In contrast, a plateau is a flat-topped elevated landform with steep sides, usually formed by volcanic activity or tectonic uplift.
- Explain how rivers contribute to the formation of landforms.
– Rivers contribute to the formation of landforms through erosion, transportation, and deposition processes. Erosion by rivers carves out valleys and canyons, while transportation carries sediment downstream, depositing it when the river slows down. Over time, these processes shape various landforms such as river valleys, floodplains, and deltas.
- What are the characteristics of a coastal plain?
– A coastal plain is a flat or gently sloping landform adjacent to a coastline. Characteristics of coastal plains include low elevation, proximity to the sea, and fertile soils. They often have sandy beaches, marshes, and estuaries and are prone to flooding during storms.
- Describe how erosion and weathering shape landforms.
– Erosion and weathering are geological processes that shape landforms over time. Weathering breaks down rocks and minerals into smaller particles through physical (mechanical) or chemical processes. Erosion then removes these particles and transports them to new locations, where they may be deposited to form sedimentary layers or sculpted into new landforms by natural forces like wind, water, and ice. Examples of landforms shaped by erosion and weathering include valleys, canyons, and rock formations.
Life Cycle of Mosquito and Grasshopper
- Outline the stages in the life cycle of a mosquito.
– The life cycle of a mosquito typically includes four stages: egg, larva, pupa, and adult. After a female mosquito lays eggs in water, they hatch into larvae, which feed on organic matter in the water. The larvae then develop into pupae, during which they undergo metamorphosis. Finally, the adult mosquito emerges from the pupa and flies away to reproduce.
- Describe the process of metamorphosis in a grasshopper.
– Grasshoppers undergo incomplete metamorphosis, which consists of three stages: egg, nymph, and adult. After hatching from eggs, grasshopper nymphs resemble adults but are smaller and lack fully developed wings and reproductive organs. As nymphs grow, they molt several times, shedding their exoskeletons and gradually developing wings and reproductive structures. Eventually, they reach adulthood and can reproduce.
- How do mosquitoes and grasshoppers reproduce?
– Mosquitoes reproduce sexually, with males and females mating to produce offspring. After mating, females lay eggs in suitable aquatic habitats, where they hatch into larvae. Grasshoppers also reproduce sexually, with males fertilizing the eggs laid by females. Grasshopper eggs are usually laid in soil or plant material, where they develop until hatching.
- What is the significance of the life cycle in the survival of these insects?
– The life cycle is crucial for the survival of mosquitoes and grasshoppers as it enables them to adapt to different environmental conditions and reproduce successfully. By undergoing metamorphosis, these insects can exploit diverse habitats and food sources at different life stages, increasing their chances of survival and reproduction.
- Explain how environmental factors influence the life cycle of mosquitoes and grasshoppers.
– Environmental factors such as temperature, humidity, rainfall, and the availability of suitable habitats profoundly influence the life cycle of mosquitoes and grasshoppers. For example, warmer temperatures accelerate the development of mosquito larvae and increase mosquito activity, while dry conditions may limit breeding sites for both mosquitoes and grasshoppers. Changes in environmental conditions can also affect the abundance and distribution of these insects, potentially impacting ecosystems and human health.
Acid, Base, and Salt Answers
- Define what an acid is and give examples.
– An acid is a chemical substance that donates protons (hydrogen ions) in a chemical reaction, typically characterized by a sour taste, the ability to turn litmus paper red, and the capacity to neutralize bases. Examples of acids include hydrochloric acid (HCl), sulfuric acid (H2SO4), and citric acid (found in citrus fruits).
- How do acids differ from bases?
– Acids and bases differ in their chemical properties and behavior in aqueous solutions. Acids donate protons (H+ ions) in solution, while bases accept protons or donate hydroxide ions (OH-) in solution. Acids typically have a sour taste, turn litmus paper red, and react with metals to produce hydrogen gas. Bases, on the other hand, have a bitter taste, feel slippery to the touch, turn litmus paper blue, and react with acids to form salts and water.
- Describe the properties of acids and bases.
– Properties of acids:
– Sour taste
– Turn litmus paper red
– React with metals to produce hydrogen gas
– Conduct electricity in aqueous solution
– Corrosive
– Properties of bases:
– Bitter taste
– Feel slippery to the touch
– Turn litmus paper blue
– React with acids to form salts and water
– Conduct electricity in aqueous solution
- Explain the pH scale and its significance.
– The pH scale is a measure of the acidity or alkalinity (basicity) of a solution, ranging from 0 to 14. A pH of 7 is considered neutral, while values below 7 indicate acidity and values above 7 indicate alkalinity. The pH scale is logarithmic, meaning that each unit change represents a tenfold difference in acidity or alkalinity. The significance of the pH scale lies in its ability to quantify the concentration of hydrogen ions (H+) in a solution, which determines its chemical properties and behaviour.
- What are neutralization reactions?
– Neutralization reactions occur when an acid reacts with a base to produce a salt and water. In these reactions, hydrogen ions (H+) from the acid combine with hydroxide ions (OH-) from the base to form water, while the remaining ions combine to form a salt. The salt produced is typically composed of the cation from the base and the anion from the acid. Neutralization reactions are important in various contexts, including in the preparation of salts, in buffering systems, and in the treatment of acidic or basic solutions.
Circulatory System BECE Answers
- What is the circulatory system, and why is it essential?
– The circulatory system, also known as the cardiovascular system, is a network of organs and vessels responsible for transporting blood, oxygen, nutrients, hormones, and waste products throughout the body. It consists of the heart, blood vessels (arteries, veins, and capillaries), and blood. The circulatory system is essential for maintaining homeostasis, delivering oxygen and nutrients to cells, removing metabolic waste products, regulating body temperature, and supporting immune function.
- Name the components of the human circulatory system.
– The components of the human circulatory system include:
– Heart: A muscular organ that pumps blood throughout the body.
– Blood vessels:
– Arteries: Carry oxygen-rich blood away from the heart to the body.
– Veins: Carry oxygen-depleted blood back to the heart from the body.
– Capillaries: Microscopic blood vessels where gas exchange and nutrient exchange occur between blood and tissues.
– Blood: A fluid connective tissue composed of plasma, red blood cells, white blood cells, and platelets.
- Describe the functions of the heart.
– The heart performs several critical functions, including:
– Pumping: The heart contracts rhythmically to pump blood throughout the body, delivering oxygen and nutrients to cells and tissues.
– Circulation: The heart maintains blood flow by coordinating the contraction and relaxation of its chambers (atria and ventricles) and valves.
– Oxygenation: The heart receives deoxygenated blood from the body and pumps it to the lungs for oxygenation, then receives oxygenated blood from the lungs and pumps it to the rest of the body.
– Regulation: The heart helps regulate blood pressure and volume to ensure adequate perfusion of tissues and organs.
– Immune response: The heart contributes to immune function by transporting white blood cells and antibodies to sites of infection or injury.
- How does blood circulate through the body?
– Blood circulates through the body in a closed-loop system, driven by the pumping action of the heart. Oxygen-rich blood leaves the heart through the left ventricle, travels through arteries to various tissues and organs, where oxygen and nutrients are delivered and waste products are removed. Deoxygenated blood returns to the heart through veins, enters the right atrium, and is pumped to the lungs for oxygenation. Oxygenated blood returns to the heart from the lungs, enters the left atrium, and is pumped out to the body again.
25. What role do arteries, veins, and capillaries play in circulation?
– Arteries carry oxygen-rich blood away from the heart to the body’s tissues and organs, branching into smaller arterioles and ultimately into capillaries. Capillaries are microscopic blood vessels where gas exchange (oxygen and carbon dioxide), nutrient exchange, and waste product exchange occur between blood and tissues. Veins carry deoxygenated blood back to the heart from the body’s tissues and organs, aided by valves and the skeletal muscle pump. Together, arteries, veins, and capillaries form a network that facilitates the exchange of substances between the blood and tissues, supporting cellular metabolism and homeostasis.
Solar System
- Identify the planets in the solar system.
– The planets in the solar system, in order from the Sun outward, are:
- Mercury
- Venus
- Earth
- Mars
- Jupiter
- Saturn
- Uranus
- Neptune
– Pluto was formerly considered the ninth planet but has been reclassified as a dwarf planet.
- What is the difference between a planet and a star?
– A planet is a celestial body that orbits a star, is spherical in shape due to gravity, and has cleared its orbit of other debris. Planets do not produce their own light but reflect light from the star they orbit. In contrast, a star is a massive, luminous sphere of plasma held together by its gravity and undergoing nuclear fusion in its core. Stars emit light and heat energy generated by nuclear reactions.
- Describe the orbit of the Earth around the Sun.
– The Earth orbits the Sun in an elliptical (oval-shaped) path known as its orbit. Earth’s orbit is nearly circular, with a slight eccentricity. It takes approximately 365.25 days for Earth to complete one orbit around the Sun, defining the length of a year. The Earth’s axis is tilted relative to its orbit, causing the changing seasons as different parts of the Earth receive varying amounts of sunlight throughout the year.
- Explain why we experience seasons on Earth.
– Earth experiences seasons due to its axial tilt (approximately 23.5 degrees) relative to its orbit around the Sun. As Earth orbits the Sun, different parts of the planet receive varying amounts of sunlight due to this tilt. When a hemisphere is tilted toward the Sun, it experiences summer, characterized by longer days and warmer temperatures. Conversely, when a hemisphere is tilted away from the Sun, it experiences winter, with shorter days and colder temperatures. The transition periods between summer and winter are spring and autumn, respectively.
- What are comets and asteroids?
– Comets are small celestial bodies composed primarily of ice, dust, and rocky material that orbit the Sun in elongated orbits. When a comet approaches the Sun, heat causes the ice to sublimate, releasing gas and forming a glowing coma (atmosphere) and often a tail that points away from the Sun due to solar wind. Asteroids are rocky or metallic objects that vary in size from small boulders to large bodies several hundred kilometers in diameter. Most asteroids orbit the Sun in the asteroid belt between Mars and Jupiter, although some have orbits that bring them closer to Earth. Unlike comets, asteroids do not develop tails when they approach the Sun.
Answers to 2024 BECE Science Atoms and the Periodic Table Questions
- What is an atom, and what are its basic components?
– An atom is the basic unit of matter, consisting of a nucleus containing protons and neutrons, surrounded by electrons in orbitals. Protons have a positive charge, neutrons have no charge (neutral), and electrons have a negative charge.
- Describe the structure of an atom.
– The structure of an atom consists of a nucleus containing protons and neutrons, surrounded by a cloud of electrons in orbitals. Protons and neutrons are located in the nucleus, with protons having a positive charge and neutrons being neutral. Electrons, which have a negative charge, occupy orbitals surrounding the nucleus in various energy levels or shells.
- Explain the significance of the periodic table.
– The periodic table is a tabular arrangement of chemical elements organized by their atomic number, electron configuration, and recurring chemical properties. It provides a systematic way to classify and predict the properties of elements based on their position in the table. The periodic table is significant because it allows scientists to understand the relationships between different elements, predict their behaviors in chemical reactions, and discover new elements based on gaps or patterns in the table.
- How are elements arranged in the periodic table?
– Elements in the periodic table are arranged in order of increasing atomic number (the number of protons in the nucleus). They are organized into periods (rows) and groups (columns). Elements in the same group share similar chemical properties due to their similar electron configurations, while elements in the same period have sequentially increasing atomic numbers and exhibit periodic trends in properties such as atomic radius, ionization energy, and electronegativity.
- Give examples of elements and their symbols.
– Examples of elements and their symbols include:
– Hydrogen (H)
– Helium (He)
– Carbon (C)
– Oxygen (O)
– Nitrogen (N)
– Sodium (Na)
– Chlorine (Cl)
– Iron (Fe)
– Gold (Au)
– Uranium (U)
Hydrological Cycle(Water Cycle)
- Define the hydrological cycle.
– The hydrological cycle, also known as the water cycle, is the continuous process by which water circulates between the Earth’s surface, atmosphere, and hydrosphere (oceans, rivers, lakes, etc.). It involves several processes, including evaporation, condensation, precipitation, runoff, infiltration, and groundwater flow.
- Describe the processes involved in the hydrological cycle.
– The processes involved in the hydrological cycle include:
– Evaporation: Conversion of liquid water into water vapor by solar energy.
– Condensation: Conversion of water vapor into liquid water, forming clouds.
– Precipitation: Water vapor condenses and falls to the Earth’s surface as rain, snow, sleet, or hail.
– Runoff: Surface water flows over the land surface into streams, rivers, and eventually into oceans.
– Infiltration: Water seeps into the soil and percolates downward, replenishing groundwater.
– Groundwater flow: Movement of water through porous rock layers in the subsurface, eventually returning to the surface through springs or feeding into surface water bodies.
- Explain the role of evaporation and condensation in the hydrological cycle.
– Evaporation transfers water from the Earth’s surface (e.g., oceans, lakes, rivers) into the atmosphere as water vapour, driven by solar energy. Condensation reverses this process, converting water vapour in the atmosphere into liquid water or ice particles, forming clouds. Evaporation and condensation are crucial processes in the hydrological cycle as they facilitate the transfer of water between the Earth’s surface and the atmosphere, driving weather patterns and precipitation.
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- How does precipitation occur?
– Precipitation occurs when water vapour in the atmosphere condenses into liquid water or ice crystals and falls to the Earth’s surface. This can happen through several mechanisms, including cooling of air masses, convergence of air masses, uplift of air along mountain ranges, and atmospheric instability. Common forms of precipitation include rain, snow, sleet, and hail, depending on temperature and atmospheric conditions.
40. What factors influence the hydrological cycle?
– Several factors influence the hydrological cycle, including:
– Solar energy: Drives evaporation and fuels the hydrological cycle.
– Temperature: Affects the rate of evaporation, condensation, and precipitation.
– Wind: Influences the movement of water vapor and the distribution of precipitation.
– Topography: Shapes weather patterns, affecting precipitation and runoff.
– Vegetation: Impacts evapotranspiration rates and infiltration of water into the soil.
– Human activities: Alter land use, water storage, and runoff patterns, affecting the hydrological cycle.
2024 BECE Integrated Science Questions on Farming System and Cultural Practices Answers
- Define farming system and cultural practices.
– A farming system refers to the combination of crops, livestock, farming methods, and agricultural practices used by farmers to produce food, fiber, and other agricultural products. Cultural practices, also known as agricultural practices or farming practices, encompass the techniques, traditions, knowledge, and rituals associated with farming activities, including cultivation, planting, irrigation, fertilization, pest control, and harvesting.
- Name different types of farming systems.
– Different types of farming systems include:
– Subsistence farming: Small-scale farming primarily for self-sufficiency, with minimal use of external inputs and technology.
– Commercial farming: Large-scale farming for profit, often involving specialized crops or livestock and modern agricultural techniques.
– Mixed farming: Combination of crop cultivation and livestock rearing on the same farm, providing diverse sources of income and food.
– Intensive farming: High-input farming with intensive use of land, labor, fertilizers, pesticides, and machinery to maximize yields.
– Extensive farming: Low-input farming with large land areas and minimal use of labour and inputs per unit of land, often practiced in sparsely populated areas.
- Describe traditional and modern farming methods.
– Traditional farming methods are often labour-intensive, relying on manual tools, natural fertilizers (e.g., manure), and traditional crop varieties. Practices may include hand planting, crop rotation, intercropping, and rainwater harvesting. In contrast, modern farming methods are more mechanised technologically advanced, and input-intensive, incorporating machinery, synthetic fertilizers, pesticides, genetically modified crops, precision agriculture techniques, and irrigation systems to increase efficiency and yields.
- Explain the importance of cultural practices in farming.
– Cultural practices play a crucial role in farming by preserving traditional knowledge, fostering social cohesion, and promoting sustainable agriculture. They reflect local customs, beliefs, and values related to agriculture and the environment, passed down through generations. Cultural practices also influence farming decisions, such as crop selection, planting dates, and pest management strategies, based on indigenous wisdom and experience.
- How do cultural practices impact crop yields and quality?
– Cultural practices can significantly impact crop yields and quality by influencing factors such as soil fertility, water management, pest and disease control, and crop nutrition. Sustainable cultural practices, such as crop rotation, organic farming, agroforestry, and integrated pest management, can improve soil health, conserve natural resources, enhance biodiversity, and promote resilience to climate change, leading to higher yields and better-quality crops over the long term.
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